Kanggo mbantu High Efficiency Metric Square Head Bolts nolak teyeng luwih apik lan katon luwih apik, dheweke entuk perawatan permukaan sing beda. Sing umum kalebu seng dilapisi - kanthi lapisan kromat sing cetha, kuning, utawa ireng - lan iki menehi perlindungan karat dhasar. Hot-dip galvanizing nambah lapisan seng kandel lan angel, sing bisa dianggo kanthi apik ing papan sing atos.
Baut kepala persegi metrik stainless steel kanthi alami ora gampang karat. Ana uga pilihan liyane, kayata lapisan fosfat (biasane digunakake ing cat), oksida ireng (sing mbantu katon lan tahan karat sethithik), utawa plating mekanik. Sing dipilih gumantung saka proteksi karat sing dibutuhake.
| Mon | 3/8 | 7/16 | 1/2 | 5/8 | 3/4 | 7/8 | 1 | 1-1/8 | 1-1/4 | 1-3/8 | 1-1/2 |
| P | 16|24|32 | 14|20|28 | 13|20|28 | 11|18|24 | 10|16|20 | 9|14|20 | 8|12|20 | 7|12|18 | 7|12|18 | 6|12|18 | 6|12|18 |
| ds maks | 0.388 | 0.452 | 0.515 | 0.642 | 0.768 | 0.895 | 1.022 | 1.149 | 1.277 | 1.404 | 1.531 |
| s maks | 0.562 | 0.625 | 0.75 | 0.938 | 1.125 | 1.312 | 1.5 | 1.688 | 1.875 | 2.062 | 2.25 |
| s min | 0.544 | 0.603 | 0.725 | 0.906 | 1.088 | 1.269 | 1.45 | 1.631 | 1.812 | 1.994 | 2.175 |
| e maks | 0.795 | 0.884 | 1.061 | 1.326 | 1.591 | 1.856 | 2.121 | 2.386 | 2.652 | 2.917 | 3.182 |
| e min | 0.747 | 0.828 | 0.995 | 1.244 | 1.494 | 1.742 | 1.991 | 2.239 | 2.489 | 2.738 | 2.986 |
| k maks | 0.268 | 0.316 | 0.348 | 0.444 | 0.524 | 0.62 | 0.684 | 0.78 | 0.876 | 0.94 | 1.036 |
| k min | 0.232 | 0.278 | 0.308 | 0.4 | 0.476 | 0.568 | 0.628 | 0.72 | 0.812 | 0.872 | 0.964 |
| r maks | 0.03 | 0.03 | 0.03 | 0.06 | 0.06 | 0.06 | 0.09 |
0.09 |
0.09 |
0.09 |
0.09 |
| r min | 0.01 | 0.01 | 0.01 | 0.02 | 0.02 | 0.02 | 0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
Bolts Kepala Square Metrik Efisiensi Tinggi ngetutake standar metrik ISO kaya DIN 478 (ulir parsial) lan DIN 479 (ulir lengkap) - standar kasebut nyedhiyakake ukuran utama. Ukuran sirah (jembare ing bagean sing rata) cocog karo diameter bolt. Contone, bolt M8 biasane duwe sirah 13mm.
Dawane standar saka ukuran sekrup mesin sing cendhak nganti pirang-pirang atus milimeter. Utas ngetutake standar metrik ISO kasar (M) utawa apik (MF). Nalika sampeyan nemtokake bolt kepala kothak metrik, sampeyan kudu nyathet diameter (M), pitch (yen perlu), dawa, standar, bahan bahan, lan finish.
P: Sepira tepate dimensi H High Efficiency Metric Square Head Bolts? Apa padha tundhuk karo standar ISO?
A: Bolts Kepala Square Metrik Efisiensi Dhuwur kita digawe kanthi watesan ukuran sing ketat, miturut standar ISO sing relevan-biasane ISO 4017. Iki utamane kanggo baut hex, nanging ukuran sirah bisa digunakake kanthi cara sing padha. Iki nggawe manawa lebar lan dhuwur sirah konsisten ora preduli ukurane, saengga pas karo kunci pas lan bisa digunakake kanthi lancar nalika nggabungake.